Ecological restoration method for sulfur-containing mine waste slag pile

Abstract

The invention relates to a restoration method for a mine waste slag pile, specifically to an ecological restoration method for a sulfur-containing mine waste slag pile. The ecological restoration method comprises the following steps: (1) plowing and flatting a waste slag pile, and carrying out natural and full leaching and exposing under the sun; (2) mixing waste slag with quicklime, sludge and an organic fertilizer; (3) planting nitrogen-fixing trees, shrubs and herbaceous plants so as to form a dominant plant community; and (4) allowing pioneer species to evolve, and planting woody trees and shrubs. The ecological restoration method for the sulfur-containing mine waste slag pile provided by the invention can simply and rapidly construct a plant community on the sulfur-containing mine waste slag pile, plants a nitrogen-fixing plant dominant community by utilizing combination of engineering measures and biological measures, promotes reconstruction and evolution of an ecological system in a mine area in the means of natural restoration, restores the stability of the ecological system, thereby achieving the purpose of ecological restoration of a mine.

Description

technical field [0001] The invention relates to a restoration method of a mine waste residue heap, in particular to an ecological restoration method of a sulfur-containing mine waste residue heap. Background technique [0002] In recent years, my country's mine development has developed rapidly, and the status and role of the mining industry in the national economy have risen sharply. As the basic industry of the national economy, the economic contribution of the mining industry has attracted attention. Under the conditions of varying degrees of improvement in our country's living standards, the degree of concern and requirements for our own living environment has increased unprecedentedly. More people are concerned about the environment we live in. At present, we are experiencing an important stage of conflicting challenges between the rapid development of mine economy and the deterioration of mine environment. How to turn abandoned mines into treasures, restore polluted ...

AI Technical Summary

Problems solved by technology

If these problems are not dealt with early, it will lead to a vicious circle, which will seriously damage the surrounding environment of the mining area and the health of residents.

[0004] At present, for the restoration of abandoned non-ferrous metal mines or heavy metal pollution, it is mainly through organic chemical restoration or physical heat treatment, but the disadvantage is that the input cost is high, it is easy to cause secondary pollution, and it is difficult to restore in a large area

[0005] At present, there are few studies on the ecological restoration of sulfur-containing mine waste dumps. Similar engineering examples and researches are mainly carried out by soil engineering on abandoned land, followed by vegetation restoration, and vegetation restoration is limited to herbaceous plants or single woody plant